Effects of etchants and primers on shear bond strength of a self-ligating esthetic orthodontic bracket

Chalgren, Robert D.; Combe, E.C.; Wahl, Andrew J.

doi:10.1016/j.ajodo.2007.03.019

Cited by 19 publications

(13 citation statements)

References 8 publications

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“…Bond failure of brackets is frustrating for the practitioner, affects appliance efficiency, has an economic impact on the practice, and can significantly delay the treatment progress [7, 8]. One reason for this occurrence, in addition to the type of adhesives used, can be the different bond strength of the orthodontic bracket pad [9].…”

Section: Introductionmentioning

confidence: 99%

The Influence of No-Primer Adhesives and Anchor Pylons Bracket Bases on Shear Bond Strength of Orthodontic Brackets

Scribante

Sfondrini

Fraticelli

et al. 2013

BioMed Research International

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Objective. The aim of this study was to compare the shear bond strength (SBS) and adhesive remnant index (ARI) scores of no-primer adhesives tested with two different bracket bases. Materials and Methods. 120 bovine permanent mandibular incisors were divided into 6 groups of 20 specimens. Two brackets (ODP) with different bracket bases (anchor pylons and 80-gauge mesh) were bonded to the teeth using a conventional adhesive (Transbond XT) and two different no-primer adhesive (Ortho Cem; Heliosit) systems. Groups were tested using an instron universal testing machine. SBS values were recorded. ARI scores were measured. SEM microphotographs were taken to evaluate the pattern of bracket bases. Statistical analysis was performed. ANOVA and Tukey tests were carried out for SBS values, whereas a chi-squared test was applied for ARI scores. Results. Highest bond strength values were reported with Transbond XT (with both pad designs), Ortho Cem bonded on anchor pylons and Heliosit on 80-gauge mesh. A higher frequency of ARI score of “3” was reported for Transbond XT groups. Other groups showed a higher frequency of ARI score “2” and “1.” Conclusion. Transbond XT showed the highest shear bond strength values with both pad designs.

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Section: Introductionmentioning

confidence: 99%

The Influence of No-Primer Adhesives and Anchor Pylons Bracket Bases on Shear Bond Strength of Orthodontic Brackets

Scribante

Sfondrini

Fraticelli

et al. 2013

BioMed Research International

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“…Lowest shear strength values were obtained when blood contamination occurred both before and after priming. In literature self ligating brackets has been tested only onto dry enamel (16-18). To our knowledge there are no published studies that evaluated bond strength of self-ligating brackets onto blood contaminated enamel.…”

Section: Discussionmentioning

confidence: 99%

Disinclusion of unerupted teeth by mean of self-ligating brackets: Effect of blood contamination on shear bond strength

Scribante¹,

Sfondrini²,

Gatti³

et al. 2013

Med Oral

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Objectives: The aim of this study was to assess the effect of blood contamination on the shear bond strength and failure site of three different orthodontic self-ligating brackets. Study Design: 240 bovine permanent mandibular incisors were randomly divided into 12 groups of 20 specimens each. Orthodontic self-ligating brackets were tested under four different enamel surface conditions: a) dry, b) blood contamination before priming, c) blood contamination after priming, d) blood contamination before and after priming. Brackets were bonded to the teeth and subsequently tested using a Instron universal testing machine. Shear bond strength values and adhesive failure rate were recorded. Statistical analysis was performed using ANOVA and Tukey tests (strength values), and Chi squared test (ARI Scores). Results: Non-contaminated enamel surfaces showed highest bond strengths for all self ligating brackets. Under blood-contamination shear bond strengths lowered for all brackets tested. Groups contaminated before and after primer application showed the lowest shear bond strength. Significant differences in debond locations were found among the groups under the various enamel surface conditions. Conclusions: Blood contamination of enamel during the bonding procedure lowers bond strength values of self ligating brackets, expecially when contamination occur in different times of the bonding procedure. Key words:Disinclusion, self ligating brackets, blood, contamination, enamel, orthodontics, oral surgery.

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“…Higher treatment speed claimed using self-ligating brackets can be reduced from many factors, such as early accidental de-bonding, bracket breakage or damage to the bracket wicket 3, 8 . In order to avoid bracket damages or detachments, forces that have to be applied to open and close the wicket that engage the wire inside the bracket should be known.…”

Section: Introductionmentioning

confidence: 99%

Opening and closure forces of sliding mechanisms of different self-ligating brackets

et al. 2013

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Self-ligating brackets engage the wire by means of a slide mechanism. Forces that have to be applied to open and close the sliding mechanism of brackets are still unknown.Objective:The aim of this study was to measure and compare the opening and closure forces of different self-ligating brackets. Material and Methods:Three different stainless steel self-ligating brackets (Carriere LX, Ortho Organizers; F1000, Leone; Damon Q, Ormco) were tested. For each different bracket, 20 maxillary right central incisors and 20 mandibular right central incisors were used. Opening and closure forces were measured using an Instron Universal Testing Machine. Statistical analysis was performed and ANOVA and Tukey tests were carried out. Results:Opening forces were registered between 1.1 N and 5.6 N, whereas closure forces were recorded between 1.57 N and 4.87 N. Significant differences were detected among the different brackets and between the two prescriptions tested. Conclusion:The knowledge of different opening and closure forces of self-ligating brackets can help the orthodontist in the clinical management of these devices.

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Effects of etchants and primers on shear bond strength of a self-ligating esthetic orthodontic bracket

Cited by 19 publications

References 8 publications

The Influence of No-Primer Adhesives and Anchor Pylons Bracket Bases on Shear Bond Strength of Orthodontic Brackets

The Influence of No-Primer Adhesives and Anchor Pylons Bracket Bases on Shear Bond Strength of Orthodontic Brackets

Disinclusion of unerupted teeth by mean of self-ligating brackets: Effect of blood contamination on shear bond strength

Opening and closure forces of sliding mechanisms of different self-ligating brackets

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